There's one of these near the Mechanics Training Institute in northern Wyoming known as Socket Tuya. Across the valley, in a historically German part of the state, is its sister volcano, Göttehandett Tuya. Local legends tell of a third one in the vicinity, known by the Navajo name Watappenhd Tuya, but every expedition that set out in search of it disappeared under mysterious circumstances.

I haven't even mentioned the one in rural Pennsylvania, Whatsit Tuya. But nobody cares about that one anyway.